Desert drake

 So. Basically, you take a blue dragon's lust for power, and you remove the mental capacity needed to understand such a yearning, and then splash in some sandworm shenanigans - and you got yourself a desert drake. Also happens to be the mightiest of the drakes (as of bestiary 2) at level 8.

A group of space-faring dracologists are on their most daunting task yet. Some illegal beast traffickers caused a major ecological disaster - they smuggled some duneworms from one desert planet to another. And yet, Kandallore doesn't have Malahar's native parasites that keep the worms from growing truly gigantic. As it stands, Kandallore's dessert drakes are facing extinction. While adult drakes are too big and ferocious to safely capture, the scientists are now tasked with finding, securing and extracting as many eggs and juveniles as they can - while avoiding giant worms and angry drake parents ready to dive out of the sand at every step.

The Flying Sand desert, a cursed and avoided location, is inhabited by a huge flock of desert drakes. The dark grey "sand" of the desert is actually fine iron dust, which keeps getting magnetized from all of the drakes electrical discharges - giving the locale its name. The drakes, for their part, are drawn to the accursed land like nowhere else - especially to the fabled central plateau, rumored to contain ancient technology. Unfortunately for them, that plateau is exactly where a shaman and his druid lover were foretold to have their last stand...

Most desert drakes stick to... well, deserts. Thundertooth has always been a clever girl though - she realized her electrically charged attacks became especially potent underwater. Thus, she became the tormentor of Dawnwater, a triton settlement in the shallows, just off the coast of Kali Gorya. The tritons try to send word to landlubbers and call for aid - but Thundertooth hunts all their messengers down. Finally, a group of triton youth are given magical bubbles of land breathing, and must venture forth into the weird, dry lands above, and stand up to their sadistic, draconic nemesis.